10-13-08 Drainage and Flooding Committee minutes

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k lot z 4~. ass 0 cia t e 5 are expected and identify potential means to mitigate the adverse impacts, either by remedy within the boundary of the upstream City or by remedy within La Porte with appropriate contribution to implementation of the remedy by the upstream City. Such coordination should be pursued where necessary. If the City suspects that a current flooding problem within the City is the result of past unmitigated changes in an upstream, non City area, the City could undertake discussions with the upstream entity believed to be contributing to the current flooding problems. These discussions and the actions taken in support of the discussions should 1) delineate the character, location, and extent of the flooding problem believed to be the result of the upstream conditions; 2) identify, describe and demonstrate the change or set of upstream conditions which are believed to be the source of the flooding problem in question; 3) suggest potential remedies for the problem, and 4) propose a recommended plan to implement actions to institute the remedy. 5.2.7 Implementation of Drainage Criteria Recommendations for upgrades in drainage criteria and standards currently used by the City were made in Section 2 of Letter Report No.3. Particularly important among those recommendations in regard to recommended drainage projects are the following: 5.2.7.1 Provision of Sheet Flow Paths Sheet flow path identification and inclusion should be a required consideration in all new or redevelopment as a typically efficient means to control excess street ponding. Proposed future development should be critically reviewed in regard to provision of ponding relief using sheet flow pathways. 5-11 Klotz Associates Project No. 0127.008.000 January 2009 La Porte Citywide Drainage Study City of La Porte